Home / 385,066.72-531,390.34-215,300.85

Finding the Fourth Proportional to 385,066.72, 531,390.34 and 215,300.85

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Solution

The fourth proportional to 385,066.72, 531,390.34 and 215,300.85 is: 297,114.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,066.72 : 531,390.34 = 215,300.85 : x
  2. Step 2: Convert to fraction form
    385,066.72/531,390.34 = 215,300.85/x
  3. Step 3: Cross multiply
    385,066.72x = 531,390.34 × 215,300.85
  4. Step 4: Simplify right side
    385,066.72x = 114,408,791,883.79
  5. Step 5: Solve for x
    x = 114,408,791,883.79/385,066.72
  6. Step 6: Final answer
    x = 297,114.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.